Gun sight



Search ti Patented June 5, 1945 GUN SIGHT Crawford C. Loomis, Ilion, N.Y., assgnor to Remington Arms Company, Inc., Bridgeport, Conn., acorporation of Delaware Application June 9, 1943, Serial No. 490,153

5 Claims.

The present invention relates to a gun sight, and particularly a frontsight of the ramp type, wherein a rearwardly and downwardly inclinedserrated ramp surface is disposed below the sight bead facing therieman. In front sight structures heretofore in use it has been thepractice to form the ramp as an integral part of the rifle barrel, or asan integral part of a rifle barrel encircling mounting, both expensivestructures in view of the precision requirements of such sights,requiring in the one case that the ramp sight be formed from the metalof the gun barrel, and in the other that the ramp sight and the mountingbe formed from the same piece of metal.

It is an object of the present invention to provide a gun sight andmounting wherein a sight base member is interlocked with a separatemounting sleeve member, the assembly adapted to be engaged upon andsecured to the gun barrel in a manner to rigidly secure the base andsleeve members in interlocking relation.

Another object is to provide a gun sight assembly includingwalaterallyadjustable sight piece, and further to pvidmsch y`str1`ictu`re in whichthe sight piece normally conceals the fastening means of the assembly.

A further object is to provide a mounting which may be accuratelysecured in any desired position longitudinally of the tapered gunbarrel, and to this end it is proposed to provide a mounting sleevecapable of adaptation to its fitting relation with the gun barrel withina limited range of adjustment thereon.

A further object is to provide a gun sight assembly wherein the mountingsleeve member may be conveniently and economically formed from tubularstock, and a ramp sight base member which may be conveniently andeconomically formed from straight bar stock, and whereby the sleeve andthe base may have their respective required metallurgie characteristics,as for instance, elasticity, hardness, and the like, imparted thereto bysuitable heat treatment or other methods independently of each other.

With the above and other objects in view, an embodiment of the inventionis shown in the accompanying drawing, and this embodiment will behereinafter more fully described with reference thereto, and theinvention will be flnally pointed out in the claims.

In the drawing- Fig. 1 is a side elevation of the gun sight, accordingto the illustrated exemplary embodiment of the invention, shown mountedupon the front end of a gun barrel.

Fig. 2 is a front elevation.

Fig. 3 is a top plan view.

Fig. 4 is a longitudinal vertical sectional View, taken along the line4-4 of Fig. 3.

Fig. 5 is a perspective view, showing the parts of the gun sight removedfrom the barrel and in separated relation relative to each other.

Similar reference characters indicate corresponding parts throughout theseveral figures of the drawing.

Referring to the drawing, the gun sight and mounting, according to theillustrated exemplary embodiment, of the invention, comprises aretaining sleeve member III, preferably formed from a length of seamlesstubular metal stock of substantially cylindrical form and capable ofconforming to the slight taper of the gun barrel II, upon which it isadapted to be fitted, this taper being for instance of the order ofabout .008 per inch. At its upper side the sleeve member is extendedinto an upwardly projecting longitudinally extending inverted troughlikeportion, including spaced parallel vertically disposed side walls I2 andI3, bridged at their ends by horizontally extending flat band portionsI4 and I5, adapted to constitute retaining means for the sight mountingbase member, as will presently more fully appear, their inwardlydisposed spaced parallel edges defining the ends of a rectangularaperture I6 in which the sight mounting base member is positioned andretained. The upper longitudinal edges of the wall portions, between theband portions I4 and I5, are preferably disposed slightly below thehorizontal plane of the under surfaces of the band portions.

The sight mounting base member I1 is preferably formed from a block ofstraight bar stock having parallel vertical sides, and of a width toengage in fitting relation between the side walls I2 and I3 of theretaining sleeve member, the under surface having a substantiallycylindrical concave groove I8 extending longitudinally thereof, andwhich has a corresponding radius to the radius of the internal surfaceof the sleeve member so that it forms a continuation of this internalsurface in the engaged position on the gun barrel to substantially fitthe gun barrel surface.

At its forward and rearward ends the base member is provided withretaining portions I9 and 20 of rectangular form at their upper` sidesand adapted t0 fit in interlocking relation beneath the band portions I4and I5 of the sleeve member, the overall length of the base membercorresponding to the overall length of the sleeve member. The retainingportions I9 and 20 terminate at their respective inner ends invertically disposed abutment shoulders 2| and 22, extending transverselyof the base member and adapted to abut the inner edge surfaces of theband portions I4 and I5. Between these abutment shoulders 2| and 22 thebase member projects upwardly to provide a sight mounting portion 23,provided at its forward end with a concavely curved end wall surface 24and at its rearward end facing the rifleman with an inclined rampsurface 25 provided with transversely extending serrations, preferablyin the form of a series of right angle ridges and grooves, for thepurpose of providing below the sight a nonglinting area to facilitatesighting of the rifle. The upper surface of the base member, between theforward wall 24 and the ramp surface 25, is in a horizontal plane, andis provided with a transversely extending dovetail slideway recess 26for receiving the transversely adjustable sight piece, as will presentlymore fullyA appear, there being provided vertically through the basemember centrally of the recess 26 an internally threaded bore 21 inwhich is engaged a fastening set screw 28, adapted to bear upon the gunbarrel to exert tightening force as between the barrel, the base memberand the sleeve member. The upper slotted end of the set screw isnormally disposed below the surface of the recess 26, so as not tointerfere with the adjustment movement of the sight piece engagedtherein.

The sight piece comprises a, horizontal base portion 29 provided at itsunder side with a dovetail sliding key portion 30, for slidably fittingwithin the recess 26, and at its upper side with a longitudinallyextending sight blade 3| having at its upper end a longitudinallyextending cylindrical rib 32. The sight bead member 33 is set in therearwardly disposed end of the rib 32. The sight piece is adapted to betransversely adjusted in the slideway 26 and secured in its adjustedposition by means of a set screw 34, provided at one side of the bladeportion 3| and adapted to bear upon the surface of the recess 26.

In assembling the sight upon the gun barrel the base member I1. is firstinserted upwardly through the aperture I6 of the trough portion of thesleeve member, with its retaining end portions I9 and 2D interlockinglyengaged beneath the band portions I4 and I5, this assembly beingthereupon engaged upon the gun barrel by forcing it inwardly thereon tothe desired point of adjustment where the slight taper of the barrelfrictionally retains it. The assembly is thereupon secured by tighteningthe set screw 28 against the gun barrel. In the case of tting themounting upon a gun barrel, without the binding action of the taper ofthe barrel, the assembly will be effectually secured,` in rigid relationthrough the tightening of the set screw alone. It will be observed thatthe trough formation at the'upper side of the seamless sleeve memberpermits it to be snugly engaged upon the slightly tapered surface of thegun barrel over a substantial range of adjustment, through the fact thatthe sides of the sleeve member are permitted to expand in varying degreebetween its ends, without however appreciably affecting the fittingrelation of the assembled base and sleeve members thereon. It will beunderstood that the passage through the sleeve member, as well as therecessed under surface of the base member may if desired be formed witha predetermined taper.

The form of the invention illustrated in the drawing and describedherein is typical and i1- lustrative only, and it is evident that theinvention is capable of embodiments in other forms, all falling withinthe scope of the appended claims, which are to be broadly construed.

What is claimed is:

1. In a gun sight for attachment to a gun barrel, a sight base memberadapted to be engaged upon the barrel longitudinally of its axis, andincluding a retaining portion with a top wall extending transversely ofsaid longitudinal axis, and a retaining sleeve member engageable aboutsaid barrel and including a longitudinal projection slotted to receivesaid base member and having retaining band portions extendingtransversely of said longitudinal axis at opposite ends of saidaperture, at least one of said bands constructed and arranged to engagein abutting relation with said top wall of said sight base member tolock said base member in the slot of said sleeve member.

2. In a gun sight for attachment to a gun barrel, a sight base memberhaving a longitudinally extending concavely recessed under surfaceadapted to be engaged upon and t the barrel longitudinally of its axisand shoulders at opposite ends of said member extending transversely tosaid longitudinal axis, and a retaining sleeve member engageable aboutsaid barrel, said sleeve having retaining band portions extendingtransversely of said longitudinal axis and constructed and arranged toabut the respective shoulders of said sight base member to lock saidbase member against longitudinal movement with respect to said sleevemember.

3. In a gun sight for attachment to a gun barrel, a sight base memberadapted to be engaged upon the barrel longitudinally of its axis, aretaining sleeve member engageable about the barrel including aprojecting retaining band portion engaged over a portion of said sightbase member, and a fastening set screw carried by said base memberengageable with said gun barrel to exert outward force on said basemember against the resistance of said band portion.

4. In a gun sight for attachment to a gun barrel, a sight base memberadapted to be engaged with the barrel longitudinally of its axis andhaving retaining portions at its ends and an intermediate sight mountingportion projected upwardly from said end portions, a retaining sleevemember engageable with said barrel including a longitudinal projectionslotted to receive said sight base and having transversely extendingretaining band portions at its ends adapted to extend over and abut theretaining end portions of said sight base member, the slot in saidprojection being adapted to receive said upwardly projecting sightmounting portion of said sight base member.

5. In a gun sight for attachment to a gun barrel, a sight base memberadapted to be engaged with the barrel longitudinally of its axis havingretaining portions at its ends and an intermediate sight mountingportion projecting upwardly from said end portionsltsaid upwardlyprojecting portion having a transverse sight piece receiving recess inits upper surface, a sight piece in said recess, a set screw in saidsight piece to fasten the latter in said recess, a retaining sleevemember engageable with sai barrel including an outwardly projectingsight base receiving formation extending longitudinally thereof at oneside having transversely extending retaining band portions at its endsadapted to extend over the retaining end portions of said sight basemember, and to abut opposite ends of said sight mounting portion, saidlongitudinally extending receiving formation dening an aperture betweensaid band portions adapted to receive said upwardly projecting sightmounting portion of said sight base member, and a fastening set screwcarried by said base member disposed in said sight piece receivingrecess and engageable with said gun barrel to exert outward force onsaid base member against the resistance of said band portions,

CRAWFORD C. LOOMIS.

